The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 1985
Filed:
Sep. 20, 1982
Robert M Knudson, British Columbia, CA;
Hubert Ehrenfellner, British Columbia, CA;
MacMillan Bloedel Limited, Vancouver, CA;
Abstract
An apparatus for laying a mat of wood strands, particularly long strands, in the process of producing a composite product such as waferboard is disclosed. In the past it has not been possible to lay long wafers in an oriented mat except by hand. The present invention provides a means for forming a pile of wood strands of substantially uniform depth, a plurality of spike rolls located at one side of the pile of wood strands to pull the wood strands out of the pile and form a uniform curtain of falling strands and a conveyor to force the pile of wood strands against the spike rolls. Beneath the spike rolls are a pair of counter-rotating spreader rolls spaced apart to receive the curtain of strands and having spikes to distribute the strands in an even mat beneath. A horizontal adjustment is provided to position the spreader rolls beneath the curtain and vary the distance between the rolls.